In the wake of the San Bernardino shooting and President Obama’s address to the nation, Donald Trump has called for banning Muslims from entering the United States.

This is counterproductive racist and awful. We need a credible candidate from the Republicans in 2016, not a reality television star who is a disgrace to the nation and its founding principles. Let’s leave aside the morality here, which on its face is terrible, but recall what ISIS wants us to do which is turn this a religious war between the West and Muslims.

ISIS wants us in our response to their provocations to eliminate the gray zone, making Muslims have to choose between their faith and where they live. A small fraction of Muslims have been radicalized, but ISIS wants us to treat the Muslims community with such disdain and hatred that the world they see — of Muslims being discriminated against — becomes a reality.

This is something George W. Bush resisted during his tenure as president, and Republicans and Americans of good will have to reject this cancer publicly and repeatedly, as Donald Trump’s populist xenophobia┬áis a greater threat to the republic than ISIS.